ArticleScientific data2022
The Altered States Database: Psychometric data from a systematic literature review.
Article in Scientific data, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
17 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Dose-response relationships of LSD-induced subjective experiences in humans.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2023Pooled it
- The 3D-ASCr scale: A revalidation of the core dimensions of the Altered States of Consciousness Rating Scale 5D(11)-ASC for psychedelic research.Journal of psychopharmacology (Oxford, England) · 2026Trial
- Induction of altered states of consciousness during Floatation-REST is associated with the dissolution of body boundaries and the distortion of subjective time.Scientific reports · 2024Trial
- Integrating the Mystical Experience Questionnaire Into a Broader Psychometric Framework: English Validation of the Psychedelic Experience Scale and Comparison of Psilocybin and LSD Sessions Across Two Controlled Settings.International journal of methods in psychiatric research · 2026Article
- Prometheus unbound? Oceanic affectivity and the neuropsychodynamics of addiction.Frontiers in psychology · 2026Article
- An exploratory study of breathwork-induced altered states of consciousness in experienced practitioners: the airways to alteration (A2A) trial.Frontiers in psychology · 2026Article
- Aquahenosis: a non-pharmacological altered state of consciousness induced by floatation-REST in individuals with anxiety and depression.Neuroscience of consciousness · 2026Article
- Phenomenology of Psychedelic Experiences and Psychedelic-Associated Distressing Effects: Quantifying Subjective Experiences.Current topics in behavioral neurosciences · 2026Review
- Classifying Psychedelic-Related Complications.Current topics in behavioral neurosciences · 2026Review
- The Afterglow Inventory (AGI): Validation of a new instrument for measuring subacute effects of classic serotonergic psychedelics.Journal of psychopharmacology (Oxford, England) · 2025Article
- Decreased COCommunications psychology · 2025Article
- A practical guide to evaluating sensitivity of literature search strings for systematic reviews using relative recall.Research synthesis methods · 2025Review
- Dynamic medial parietal and hippocampal deactivations under DMT relate to sympathetic output and altered sense of time, space, and the self.Imaging neuroscience (Cambridge, Mass.) · 2025Article
- Thalamocortical interactions reflecting the intensity of flicker light-induced visual hallucinatory phenomena.Network neuroscience (Cambridge, Mass.) · 2025Article
- Documenting and defining emergent phenomenology: theoretical foundations for an extensive research strategy.Frontiers in psychology · 2024Article
- Flicker light stimulation enhances the emotional response to music: a comparison study to the effects of psychedelics.Frontiers in psychology · 2024Article
- Flicker light stimulation induces thalamocortical hyperconnectivity with LGN and higher-order thalamic nuclei.Imaging neuroscience (Cambridge, Mass.) · 2023Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In this paper, we present the development of the Altered States Database (ASDB), an open-science project based on a systematic literature review. The ASDB contains psychometric questionnaire data on subjective experiences of altered states of consciousness (ASC) induced by pharmacological and non-pharmacological methods. The systematic review follows the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Scientific journal articles were identified through PubMed and Web of Science. We included studies that examined ASC using the following validated questionnaires: Altered States of Consciousness Rating Scale (APZ, 5D-ASC, 11-ASC), Phenomenology of Consciousness Inventory (PCI), Hallucinogen Rating Scale (HRS), or Mystical Experience Questionnaire (MEQ30). The systematic review resulted in the inclusion of a total of 165 journal articles, whereof questionnaire data was extracted and is now available on the Open Science Framework (OSF) website ( https://osf.io/8mbru ) and on the ASDB website ( http://alteredstatesdb.org ), where questionnaire data can be easily retrieved and visualized. This data allows the calculation of comparable psychometric values of ASC experiences and of dose-response relationships of substances inducing ASC.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.